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Armstrong in Clear (sans rubber skirt)CD 203.2 Thumbnail
Scale: 25 pixels / inch
Width33/8"
Height4"
Weight20 oz
VoltageT'phone
Leakage-
Pinhole1"
Style#


CD 203.2 Mechanical Drawing: MODIFIED TW INSULATOR PROPOSAL WORKPRINT 12/15/50; BELL TEL. LAB. DWG BA-247828; ARMSTRONG DWG SD-1505

Patent No. 2,734,098
February 7, 1956
Elmer Johannes Bonnesen
(Armstrong TW)